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## Description
Ref: https://github.com/cosmos/cosmos-sdk/issues/9616#issuecomment-873051972
depends: #8590
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This PR adds a full backup option for cosmovisor.
`UNSAFE_SKIP_BACKUP` is an `env` setting introduced newly.
- if `false` (default, **recommended**), cosmovisor will try to take backup and then upgrade. In case of failure while taking backup, it will just halt the process there and won't try the upgrade.
- If `true`, the cosmovisor will try to upgrade without any backup. This setting makes it hard to recover from a failed upgrade. Node operators either need to sync from a healthy node or use a snapshot from others.
---
### Author Checklist
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please add links to any relevant follow up issues.*
I have...
- [x] included the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
- [ ] added `!` to the type prefix if API or client breaking change
- [ ] targeted the correct branch (see [PR Targeting](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#pr-targeting))
- [x] provided a link to the relevant issue or specification
- [ ] followed the guidelines for [building modules](https://github.com/cosmos/cosmos-sdk/blob/master/docs/building-modules)
- [ ] included the necessary unit and integration [tests](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#testing)
- [ ] added a changelog entry to `CHANGELOG.md`
- [x] included comments for [documenting Go code](https://blog.golang.org/godoc)
- [x] updated the relevant documentation or specification
- [x] reviewed "Files changed" and left comments if necessary
- [ ] confirmed all CI checks have passed
### Reviewers Checklist
*All items are required. Please add a note if the item is not applicable and please add
your handle next to the items reviewed if you only reviewed selected items.*
I have...
- [ ] confirmed the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
- [ ] confirmed `!` in the type prefix if API or client breaking change
- [ ] confirmed all author checklist items have been addressed
- [ ] reviewed state machine logic
- [ ] reviewed API design and naming
- [ ] reviewed documentation is accurate
- [ ] reviewed tests and test coverage
- [ ] manually tested (if applicable)
* cosmovisor: set larger buffer for cosmovisor to scan log (fix#8651)
* update cosmovisor README and set buffer size to ENV setting
Co-authored-by: Marko <marbar3778@yahoo.com>
Co-authored-by: Aaron Craelius <aaron@regen.network>
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>
{,cosmosvisor/}Makefile: Add Makefile to cosmovisor/
subdirectory and integrate build target into the
top-directory Makefile.
cosmovisor/:
Create Golang-idiomatic cmd/ subdirectory to make
`cosmosvisor` binary (instead of a binary named `cmd`)
automatically installable with `go get`.
Minor changes to error handling:
- Plain error strings bring more value than the whole
stacktrace in case of dumb configuration errors.
- Output errors to /dev/stderr instead of /dev/stdout.
Remove dependency on github.com/pkg/errors.
Anil Kumar Kammari
Leo Pang
Alessio Treglia
Jonathan Gimeno